full pinout. also for Samsung A200, A288, S305, Q200, T500, T400, N500 ? 18 pin Samsung cellphone special connector  at the mobile phone (keypad up) There are two numbering schemes - with pins counted from left to right and with pins counted from right to left (phone is keypad up). Pin
left-to-right
numbering
Pin
right-to-left
numbering Signal Description181+VBATT (4.2V)acc power172RS232_TXD 163RS232_RXD 154RS232_RTS 145RS232_CTS 136SCLI2C Bus127SDAI2C Bus118GNDGround109MIC(+)Microphone plus910MIC(-)Microphone ground811GND 712VCCinternal power 3.6V613SIMPWDN_BOOTSIMM Power Down Boot514+VBATT (4.2V) 415SPK(-)Speaker plus316SPK(+)Speaker ground217DCVOLT (CHG+)charger input118DCVOLT (CHG+) 

18 pin Samsung right-to-left numbering cellphone special connector  at the cell phone (keypad up)

Source:www.pinouts.ru